Second, if you want to learn to play a piano will you do so from attending a
training and listening to a teacher talk about how to play, how a piano is made,
when pianos are used in orchestras and why piano music is important? No,
of course not. If you want to learn to play the piano, you sit at the
piano and practice. You take lessons: meet with someone weekly who
knows how to play who observes you playing and gives you feedback on your
technique. You don't do this once or even twice. You do this for
many years. The question you have to ask yourself is whether the practice
of motivational interviewing as complex as the practice of playing the
piano.

For me the answer is clear: practicing motivational interviewing is an
incredibly complex process -- more complex than playing a piano.

If you agree with me then the question that remains is only the when and how
of feedback to develop and maintain your motivational interviewing skills.